If machine J, working alone at its constant rate, takes 2 minutes to wrap 60 pieces of candy, how many minutes does it take machine K, working alone at its constant rate, to wrap 120 pieces of candy?
(1) Machine K, working alone at its constant rate, takes more than 5 minutes to wrap 60 pieces of candy.
(2) Machines J and K, working together at their respective constant rates, take 1 minute and 30 seconds to wrap 60 pieces of candy.
Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
EACH statement ALONE is sufficient.
Statements (1) and (2) TOGETHER are NOT sufficient.
takes more than 5 minutes不是takes more than 5 minutes than J
more than 5 minutes
不是 more 5 minutes
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呵呵。 眼睛不用可以考虑捐了。。。
takes more than 5 minutes不是takes more 5 minutes than J
more than 5= =
又看错了。真的是。